Almanac: The eye chart 01:48. And now a page from our "Sunday Morning" Almanac, January 18th, 1908, 107 years ago today . . . the day the Dutch ophthalmologist Herman Snellen died at the age of 73.

That’s the idea behind [Joel, Margot, and Yuchen]’s final project for [Bruce Land]’s ECE 4760—simulating the standard Snellen eye chart that tests visual acuity from an actual or simulated ...

Smartphone-based Snellen visual acuity charts has become popularized; however, their accuracy has not been established. This study aimed to evaluate the equivalence of a smartphone-based visual ...

At least once in your life, you must have squinted at the eye chart at the doctor’s office or DMV, trying to make out the blurry bottom line. Turns out, there’s some very precise math that ...

You will also learn how the Snellen Eye Chart is used to test visual acuity. Related: Checking Visual Acuity During an Eye Exam. Distance Visual Acuity Test.

The most commonly-used eye chart was developed by Dutch ophthalmologist Hermann Snellen in 1860s. The Snellen chart typically has 11 rows of large capital letters. The first line is the big letter E.

In most modern Snellen Eye Charts, the middle bar is shorter. Vision specialists today use a version of the Snellen Eye Chart with 11 lines of letters. People are also reading… ...